How do I assign to a vertex group with geometry nodes?
I may have misunderstood the question, but as I understand it you could use an attribute mix node with the factor being the vertex group, and the inputs being the different &quot;branches&quot; of the node network you want applying. In this example I mix two sets of points, one from a scaled up sphere and one from the original vertex position. For the solidify modifier you can just use the vertex group input, with a group. Sorry if I misunderstood the question.